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 Genuine HOYA 77mm HMC UVC Camera Lens Multi coated Slim Filter 77 mm $16.90 Time Remaining: 28d 7h 42m Buy It Now for only: $16.90 |
 Hoya Digital Slim Circular Polarizer 77mm Slim Filter $26.08 (11 Bids) Time Remaining: 5h 7m |
 Genuine HOYA 72mm HMC UVC Camera Lens Multi coated Slim Filter 72 mm $14.90 Time Remaining: 13d 6h 46m Buy It Now for only: $14.90 |
 Genuine Hoya 72mm Circular Polarizer Slim Filter $20.50 (4 Bids) Time Remaining: 5h 15m |
 Genuine HOYA 52mm HMC UVC Camera Lens Multi coated Slim Filter 52 mm $9.40 Time Remaining: 13d 6h 18m Buy It Now for only: $9.40 |
 B+W 77mm Slim Circular Polarizing Filter C POL Made in Germany Mint No Reserve $50.00 Time Remaining: 15h 55m Buy It Now for only: $130.00 |
 Genuine HOYA 49mm HMC UVC Camera Lens Multi coated Slim Filter 49 mm $9.40 Time Remaining: 13d 6h 3m Buy It Now for only: $9.40 |
 Genuine HOYA 58mm HMC UVC Camera Lens Multi coated Slim Filter 58 mm $9.90 Time Remaining: 13d 6h 27m Buy It Now for only: $9.90 |
 SLIM 62MM ND FILTER ADJUSTABLE ND2 ND400 +CLEANING PEN $21.84 Time Remaining: 1d 13h 42m |
 Marumi 49mm CPL 49 Super DHG MC Slim Thin PLD Filter Circular Polarizer Japan $43.48 Time Remaining: 12h 29m Buy It Now for only: $43.48 |
 Tama Pro D Super Slim 77mm UV Filter $14.99 Time Remaining: 1d 16h 37m Buy It Now for only: $19.99 |
 Genuine HOYA 67mm HMC UVC Camera Lens Multi coated Slim Filter 67 mm $13.90 Time Remaining: 13d 6h 39m Buy It Now for only: $13.90 |
 Nicna 55mm Pro1 D Wide slim C PL + Protector 55 filter $16.99 Time Remaining: 2d 1h 32m Buy It Now for only: $33.70 |
 slim thin profile 40mm multi coated MC UV filter for fuji fujifilm X 10 X10 $16.50 Time Remaining: 27d 14h 14m Buy It Now for only: $16.50 |
 Marumi 77mm CPL 77 Super DHG MC Slim Thin PLD Filter Circular Polarizer Japan $76.87 Time Remaining: 24d 17h 21m Buy It Now for only: $76.87 |
 Nicna 77mm Pro1 D Wide slim C PL + Protector 77 filter $26.99 Time Remaining: 2d 1h 32m Buy It Now for only: $53.55 |
 Super Slim 77mm ND Filter Neutral Density ND400 Optical Glass $20.00 Time Remaining: 19d 18h 26m Buy It Now for only: $20.00 |
 HOYA Genuine 82MM Slim CPL CIR PL Circular Polarizing Filter TWO YEAR Warranty $0.99 Time Remaining: 2d 5h |
 HOYA HMCC UV 77mm Slim frame lens filter $20.08 Time Remaining: 3d 2h 57m Buy It Now for only: $20.08 |
 Marumi 77mm 77 Super Digital DHG MC Lens Protect Slim Thin Wide Filter Japan NEW $35.92 Time Remaining: 3d 11h 43m Buy It Now for only: $35.92 |
 HOYA Genuine 77MM Slim CPL CIR PL Circular Polarizing Filter TWO YEAR Warranty $0.99 (1 Bid) Time Remaining: 2d 5h |
 HOYA HMCC UV 67mm Slim frame lens filter $17.04 Time Remaining: 16d 20h 7m Buy It Now for only: $17.04 |
 HOYA Genuine 67MM Slim CPL CIR PL Circular Polarizing Filter TWO YEAR Warranty $0.99 Time Remaining: 2d 5h |
 Hoya Digital Slim Circular Polarizer CPL 77 77mm Filter $37.90 Time Remaining: 14d 15h 33m Buy It Now for only: $37.90 |
 HOYA Genuine 58MM Slim CPL CIR PL Circular Polarizing Filter TWO YEAR Warranty $0.99 Time Remaining: 2d 5h |
 HOYA HMCC UV 52mm Slim frame lens filter $11.89 Time Remaining: 23d 19h 36m Buy It Now for only: $11.89 |
 Genuine HOYA PRO1D UV 58mm PRO1 Digital Multi Coated Filter Slim JAPAN UV0 $29.30 Time Remaining: 17d 14h 57m Buy It Now for only: $29.30 |
 Slim 62 62mm fader adjustable ND filter ND2 to ND400 for Nikon 70 300mm lens $18.99 Time Remaining: 2d 13h 27m |
 Fotga 62mm slim fader ND filter adjustable variable neutral density ND2 to ND400 $18.98 Time Remaining: 23d 2h 26m Buy It Now for only: $18.98 |
 Slim 58 58mm fader adjustable ND filter lens ND2 to ND400 for Canon 350D 500D $18.99 Time Remaining: 2d 13h 27m |
 Fotga 77mm slim fader ND filter adjustable variable neutral density ND2 to ND400 $24.64 Time Remaining: 23d 2h 34m Buy It Now for only: $24.64 |
 Slim 72mm fader adjustable ND filter ND2 to ND400 for Nikon D90 D60 D40 18 200mm $20.42 Time Remaining: 2d 13h 52m |
 Hoya 77mm UV O PRO1 Super Multi Coated S HMC Filter Slim 500307 BRAND NEW $49.99 Time Remaining: 24d 10h 36m Buy It Now for only: $49.99 |
 Slim 77mm Fader ND Filter Neutral Density ND2 to ND400 $23.85 Time Remaining: 12d 17h 55m Buy It Now for only: $23.85 |
 SLIM 58MM FADER NEUTRAL DENSITY FILTER ND2 TO ND400 FOR CANON T1i T2i T3i T3 $20.42 Time Remaining: 2d 14h 58m |
 jyc 67mm PRO1 D Slim Multicoated CPL C PL $18.85 Time Remaining: 7d 20h 17m Buy It Now for only: $18.85 |
 B+W Schneider Optics 58mm MRC Slim Circular Polarizer 26594 NEW $60.00 Time Remaining: 3d 5h 8m |
 HOYA HMCC UV 49mm Slim frame lens filter Free Shipping $10.21 Time Remaining: 21d 19h 52m Buy It Now for only: $10.21 |
 HOYA HMCC UV 72mm Slim frame lens filter $18.49 Time Remaining: 25d 19h 14m Buy It Now for only: $18.49 |
 46mm Hoya HMC UV C SLIM Digital SLR Lens Filter 46 mm Slim Frame Multi Coated $15.00 Time Remaining: 3d 15h 41m Buy It Now for only: $16.70 |
 Genuine HOYA PRO1D UV 77mm PRO1 Digital Multi Coated Filter Slim JAPAN UV0 $47.30 Time Remaining: 5d 22h 47m Buy It Now for only: $47.30 |
 SLIM 67MM ND FILTER ADJUSTABLE ND2 ND400 +CLEANING PEN $25.29 Time Remaining: 4d 14h 28m |
 77mm Super Slim UV Ultra Violet filter Lens Protector $6.98 Time Remaining: 26d 23h 42m Buy It Now for only: $6.98 |
 Slim 67mm fader adjustable ND filter ND2 to ND400 for Canon 7D 50D 17 85mm lens $22.99 Time Remaining: 4d 14h 28m |
 Hoya Digital Slim Circular Polarizer CPL 67 67mm Filter $29.90 Time Remaining: 14d 15h 30m Buy It Now for only: $29.90 |
 Slim 52mm Fader ND Filter Neutral Density ND2 to ND400 $17.56 Time Remaining: 14d 22h 6m Buy It Now for only: $17.56 |
 SLIM 72MM ND2 ND400 ADJUSTABLE FILTER FOR CANON XL1 COMES IN PROTECTION BAG $20.42 Time Remaining: 4d 14h 32m |
 HOYA HMCC UV 58mm Slim frame lens filter $12.03 Time Remaining: 23d 19h 35m Buy It Now for only: $12.03 |
 SLIM 72MM ND ADJUSTABLE FILTER ND2 TO ND400 COMES IN MICROFIBER PROTECTION BAG $20.42 Time Remaining: 4d 14h 37m |
 Slim 52 52mm Fader ND Filter adjustable ND2 to ND400 $10.69 Time Remaining: 15d 15h 51m Buy It Now for only: $10.69 |
 HOYA HMCC UV 77mm Slim frame lens filter $19.95 Time Remaining: 3d 3h 1m Buy It Now for only: $19.95 |
 SLIM 67MM ND ADJUSTABLE FADER FILTER ND2 TO ND400 F FUJI S205EXR FUJI S200EXR $20.42 Time Remaining: 4d 14h 43m |
 HOYA HMC Digital UVC Slim Filter for Nikon Lens 77mm $19.96 Time Remaining: 26d 17h 47m Buy It Now for only: $19.96 |
 Hoya PRO1D PRO1 D Digital UV0 Filter Slim DMC 77mm 77 $48.59 Time Remaining: 4d 16h 2m Buy It Now for only: $54.00 |
 Slim 58mm Fader ND Filter Neutral Density ND2 to ND400 $18.45 Time Remaining: 27d 32m Buy It Now for only: $18.45 |
 NISI JAPAN 77mm PRO1 D Wide Slim CPL Filter PRO1D 77 $30.66 Time Remaining: 4d 17h 42m Buy It Now for only: $40.66 |
 Marumi 72mm CPL 72 Super DHG MC Slim Thin PLD Filter Circular Polarizer Japan $70.96 Time Remaining: 12h 29m Buy It Now for only: $70.96 |
 HOYA HMC UVC UV Slim Frame Lens Filter 52 52mm NEW $11.90 Time Remaining: 24d 20h 13m Buy It Now for only: $11.90 |
 Heliopan ES 72 KR 1 5 Skylight Filter Slim Version Mint $59.99 Time Remaining: 4d 19h 43m Buy It Now for only: $69.99 |
 HOYA FILTER 77mm CPL CIRCULAR POLARIZER SLIM FRAME $49.99 Time Remaining: 21d 19h 16m Buy It Now for only: $49.99 |
 HOYA 82mm Hoya HMC UV C SLIM Digital SLR Lens Filter USA $49.99 Time Remaining: 5d 8h 57m Buy It Now for only: $59.99 |
 Slim 67mm Fader ND Filter Neutral Density ND2 to ND400 $19.99 Time Remaining: 27d 32m Buy It Now for only: $19.99 |
 B+W 77mm 77 SLIM Circular Polarizer Polarizing Filter 16930 +Lens cap Excellent $49.99 Time Remaining: 5d 14h 49m |
 HOYA HMC UVC Slim Filter for Digital Camera 77mm $19.96 Time Remaining: 26d 17h 48m Buy It Now for only: $19.96 |
 HOYA HMC Digital UVC Slim Filter for Canon Lens 58mm $11.90 Time Remaining: 29d 18h 36m Buy It Now for only: $11.90 |
 46mm Hoya HMC UV C SLIM Digital SLR Lens Filter 46 mm Slim Frame Multi Coated $15.00 Time Remaining: 5d 14h 56m Buy It Now for only: $16.70 |
 Slim 72mm Fader ND Filter Neutral Density ND2 to ND400 $22.90 Time Remaining: 27d 32m Buy It Now for only: $22.90 |
 52mm Hoya HMC UV C SLIM Digital SLR Lens Filter 52 mm $13.00 Time Remaining: 5d 15h 22m Buy It Now for only: $15.75 |
 37mm Hoya HMC UV C SLIM Digital SLR Lens Filter Check Listing For Best Price $20.90 Time Remaining: 23d 15h 53m Buy It Now for only: $20.90 |
 Hoya 49mm 49 mm UV C HMC Slim Multi Coated Filter $16.70 Time Remaining: 9d 7h 25m Buy It Now for only: $16.70 |
 JAPAN Daisee 77mm Multi Coated Haze UV Filter SLIM 8 LAYER MULTI COATING $30.00 Time Remaining: 5d 16h 1m Buy It Now for only: $49.99 |
 58MM JYC PRO1 D Slim Multicoated UV MC UV $10.28 Time Remaining: 1d 4m Buy It Now for only: $10.28 |
 Heliopan 77mm Slim Version UV Filter Nikon Canon Pentax Sony New $32.00 Time Remaining: 6d 8h 50m |
 HOYA EVO 52MM SMC SUPER MULTI COATED CIRCULAR POLARIZER DIGITAL SLIM CPL FILTER $90.90 Time Remaining: 28d 8h 28m Buy It Now for only: $90.90 |
 Heliopan 72mm Slim Version UV Filter Nikon Canon Pentax Sony New $30.00 Time Remaining: 6d 9h 4m |
 B+W Slim Circular Polarizer CIRPL CPL Filter 77 77mm $75.90 Time Remaining: 24d 16h 54m Buy It Now for only: $75.90 |
 New Super Slim 58mm Fader Neutral Density ND Filter ND400 Optical Glass $17.00 Time Remaining: 9d 3m Buy It Now for only: $17.00 |
 Heliopan ES 82 2x 1 Yellow 5 Filter Made in Germany Slim Version $40.00 Time Remaining: 6d 12h 18m |
 Hoya 67mm UV O PRO1 Super Multi Coated S HMC Filter Slim 018458 BRAND NEW $38.99 Time Remaining: 24d 6h 19m Buy It Now for only: $38.99 |
 Hoya PRO1D PRO1 D Digital UV0 Filter Slim DMC 77mm 77 $48.59 Time Remaining: 6d 14h 57m Buy It Now for only: $54.00 |
 HOYA HMC UVC 67 mm Filter New Sealed 2011 Slim Frame Multi Coated Filter NWT $18.11 Time Remaining: 23d 16h 42m Buy It Now for only: $18.11 |
 52mm Hoya HMC UV C SLIM Digital SLR Lens Filter 52 mm $13.00 Time Remaining: 6d 15h 42m Buy It Now for only: $15.75 |
 Marumi 52mm CPL 52 Super DHG MC Slim Thin PLD Filter Circular Polarizer Japan $43.48 Time Remaining: 12h 29m Buy It Now for only: $43.48 |
 HOYA HMCC UV 67mm Slim frame lens filter Free Shipping $14.92 Time Remaining: 19d 6h 19m Buy It Now for only: $14.92 |
 JYC 72 mm PRO1 D Slim Multicoated UV MC UV $16.09 Time Remaining: 3d 7h 40m |
 HOYA HMC Digital UVC Slim Filter for Canon Lens 49mm $11.90 Time Remaining: 15d 16h 33m Buy It Now for only: $11.90 |
 HOYA HMCC UV 52mm Slim frame lens filter $3.50 (7 Bids) Time Remaining: 4d 16h 47m |
 HOYA HMCC UV 49mm Slim frame lens filter $26.00 Time Remaining: 7d 20h 48m Buy It Now for only: $26.00 |
 FOTGA Slim Fader Variable ND Filter Adjustable ND2 to ND400 77mm Neutral Density $24.64 Time Remaining: 26d 23h 58m Buy It Now for only: $24.64 |
 BRAND NEW HOYA HMCC UV 62mm Slim frame lens filter $5.50 (7 Bids) Time Remaining: 4d 16h 48m |
 Green Slim 67mm Fader ND Filter adjustable ND2 to ND400 $19.99 Time Remaining: 1d 21h 48m Buy It Now for only: $19.99 |
 BRAND NEW HOYA HMCC UV 67mm Slim frame lens filter $2.25 (5 Bids) Time Remaining: 4d 16h 48m |
 HOYA HMCC UV 58mm Slim frame lens filter Free Shipping $10.69 Time Remaining: 19d 6h 13m Buy It Now for only: $10.69 |
 BRAND NEW HOYA HMCC UV 72mm Slim frame lens filter $2.31 (5 Bids) Time Remaining: 4d 16h 49m |
 HOYA HMCC UV 77mm Slim frame lens filter Free Shipping $18.19 Time Remaining: 19d 6h 24m Buy It Now for only: $18.19 |
 HOYA HMC Digital UVC Slim Filter for Canon Lens 77mm $24.50 Time Remaining: 26d 17h 47m Buy It Now for only: $24.50 |
 BRAND NEW HOYA HMCC UV 77mm Slim frame lens filter $4.36 (10 Bids) Time Remaining: 4d 16h 50m |
 Genuine HOYA 62mm HMC UVC Camera Lens Multi coated Slim Filter 62 mm $13.90 Time Remaining: 13d 6h 33m Buy It Now for only: $13.90 |
 BRAND NEW HOYA HMCC UV 58mm Slim frame lens filter $9.39 (5 Bids) Time Remaining: 4d 16h 50m |
 Massa 67mm Super Slim CPL Circular Polarizing C PL Lens filter Fo Nikon 18 105mm $10.45 Time Remaining: 14d 23h 37m Buy It Now for only: $10.45 |
Why does my fish pond have what looks like green slim growing in it?
I have a fish pond, it looked great up until a little while ago. Now it has green stuff growing in it and seems to be all over the place. What happen? It came all at once. Did something go wrong with the filter? I don't have it on all the time, four times a day during the hottest part. Also been raining a lot lately, could that have anything to do with it?
its algae, and you shouldn't turn your filter off, your filter needs to be on 24/7, if turned off you will kill the beneficial bacteria which helps keep your ammonia and nitrates etc low, also does your filter have a UV light? a UV light makes the algae clump together, also have you got any pond plants? Lillie's and others shade your pond which stops algae growing.
Everybody Loves A Filter - Fatboy Slim